Stabilized chlorinated resin latex
AssigneeE. I. Du Pont de Nemours and Company
InventorsJohn C. Chen, Royce E. Ennis
Life of this patent
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Abstract
A stabilized chlorinated resin latex comprising a mixture in water of A) 50-95 wt. %, based on the weight of A and B, of a chlorinated resin, substantially free of acid moieties, having a chlorine content of 15-70 wt. %, and B) 5-50 wt. %, based on the weight of A and B, of a salt of a water-insoluble C.sub.2 -C.sub.12 alpha, beta- unsaturated olefin copolymer which contains at least 2 mole % acid moieties and is compatible with the chlorinated resin.
Claims19
A stable aqueous latex emulsion which comprises a mixture in water of
- A) 50 to 95 weight percent, based on the total weight of A and B, of a saturated chlorinated binder resin, substantially free of acid moieties, having a chlorine content of from 15-70 weight percent and weight average molecular weight of from about 5,000 to about 250,000, and
- B) 5-50 weight percent, based on the total weight of A and B, of a salt of a water-insoluble C.sub.2 -C.sub.12 alpha, beta-unsaturated olefin copolymer which contains at least 2 mole % acid moieties and which is compatible with the chlorinated resin.
A process for the preparation of a stable aqueous latex composition which comprises blending in a mixer
- A) 50 to 95 weight percent, based on the total weight of A and B of a saturated chlorinated binder resin, substantially free of acid moieties, having a weight average molecular weight from about 5,000 to about 250,000,
- B) 5-50 weight percent, based on the total weight of A and B, of a water-insoluble C.sub.2 -C.sub.12 alpha,beta-unsaturated olefin copolymer which contains at least 2 mole % acid moieties and which is compatible with the chlorinated resin, and
- C) sufficient aqueous organic or inorganic base to obtain an emulsion having a pH of at least about 8.
Dependencies are inferred from the claim text.